Detection of Frederiksenia sp. isolated from a cat with nephritis – Short communication

Ujvari, Barbara and Szeredi, Levente and Magyar, Tibor (2020) Detection of Frederiksenia sp. isolated from a cat with nephritis – Short communication. ACTA VETERINARIA HUNGARICA, 68 (2). pp. 140-146. ISSN 0236-6290 (print); 1588-2705 (online)

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Abstract

In this paper we report the phenotypic and partial genetic characterisation of a novel bacterium strain isolated from a cat with severe nephritis. Multilocus sequence analysis was performed on the 16S rRNA and three housekeeping (recN, rpoB, infB) gene sequences obtained by PCR. In accordance with the results of phenotypic tests, the phylogenetic analyses confirmed the relatedness of the new strain (6036) to the family Pasteurellaceae. On the phylogenetic trees, strain 6036 appeared in a separate branch, closest to that of the type species (Frederiksenia canicola) of the genus Frederiksenia. These two bacteria shared 95.14 and 76.88% identity in their partial 16S rRNA and recN gene sequences, respectively. The rpoB- and infB-based phylogenetic analyses indicated that strain 6036 is most closely related to Bibersteinia trehalosi (with 90.58% identity) and [Haemophilus] felis ATCC 49733 (89.50% identity), respectively. The predicted genome identity values, based on the recN gene sequences, suggested that strain 6036 can be classified into the genus Frederiksenia as a novel species. A PCR method, specific to strain 6036, was developed to allow its rapid and accurate identification and differentiation from F. canicola and other species of Pasteurellaceae. The minimal inhibitory concentrations of 18 antimicrobial agents for strain 6036 were also determined.

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